... Pumping agent/waterproofing agent/concretes accelerating... First, product outline:The air entraining agentcan improve the concretes the workability, reduces the concretes ... concretes, the pump concrete, the roller compaction concretes and the lightweight concrete, as well as water conservancy project, sea labor, port ... place coolly in dry place, avoids insolation, tight pack. Air Entraining Agent